With how undecipherable the manuscript is, my personal theory is that it's the work of a naive artist and that there's no language behind it. Just someone aping language without knowing the rules about language: https://en.wikipedia.org/wiki/Naïve_art
It's not a mental issue, it's just a rare thing that happens. Voynich fits the whole bill for the work of a naive artist.
It's not a mental issue, it's just a rare thing that happens. Voynich fits the whole bill for the work of a naive artist.